gcc/c-family/stub-objc.c

   1 /* Stub functions for Objective-C and Objective-C++ routines
   2    that are called from within the C and C++ front-ends,
   3    respectively.
   4    Copyright (C) 1991-2020 Free Software Foundation, Inc.
   5
   6 This file is part of GCC.
   7
   8 GCC is free software; you can redistribute it and/or modify it under
   9 the terms of the GNU General Public License as published by the Free
  10 Software Foundation; either version 3, or (at your option) any later
  11 version.
  12
  13 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
  14 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  15 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  16 for more details.
  17
  18 You should have received a copy of the GNU General Public License
  19 along with GCC; see the file COPYING3.  If not see
  20 <http://www.gnu.org/licenses/>.  */
  21
  22 #include "config.h"
  23 #include "system.h"
  24 #include "coretypes.h"
  25 #include "tree.h"
  26 #include "vec.h"
  27
  28 /* Provide a dummy type for the RID enum used as an argument to
  29    objc_prop_attr_kind_for_rid () */
  30 enum rid { DUMMY };
  31
  32 #include "c-objc.h"
  33
  34 tree
  35 objc_is_class_name (tree ARG_UNUSED (arg))
  36 {
  37   return 0;
  38 }
  39
  40 tree
  41 objc_is_id (tree ARG_UNUSED (arg))
  42 {
  43   return 0;
  44 }
  45
  46 tree
  47 objc_is_object_ptr (tree ARG_UNUSED (arg))
  48 {
  49   return 0;
  50 }
  51
  52 bool objc_diagnose_private_ivar (tree ARG_UNUSED (arg))
  53 {
  54   return false;
  55 }
  56
  57 tree
  58 objc_lookup_ivar (tree other, tree ARG_UNUSED (arg))
  59 {
  60   /* Just use whatever C/C++ found.  */
  61   return other;
  62 }
  63
  64 void
  65 objc_check_decl (tree ARG_UNUSED (decl))
  66 {
  67 }
  68
  69 void
  70 objc_check_global_decl (tree ARG_UNUSED (decl))
  71 {
  72 }
  73
  74 tree
  75 objc_common_type (tree ARG_UNUSED (type1), tree ARG_UNUSED (type2))
  76 {
  77   return 0;
  78 }
  79
  80 bool
  81 objc_compare_types (tree ARG_UNUSED (ltyp), tree ARG_UNUSED (rtyp),
  82                     int ARG_UNUSED (argno), tree ARG_UNUSED (callee))
  83 {
  84   return false;
  85 }
  86
  87 bool
  88 objc_have_common_type (tree ARG_UNUSED (ltyp), tree ARG_UNUSED (rtyp),
  89                        int ARG_UNUSED (argno), tree ARG_UNUSED (callee))
  90 {
  91   return false;
  92 }
  93
  94 void
  95 objc_volatilize_decl (tree ARG_UNUSED (decl))
  96 {
  97 }
  98
  99 tree
 100 objc_rewrite_function_call (tree function, tree ARG_UNUSED (first_param))
 101 {
 102   return function;
 103 }
 104
 105 tree
 106 objc_message_selector (void)
 107 {
 108   return 0;
 109 }
 110
 111 void
 112 objc_declare_alias (tree ARG_UNUSED (alias), tree ARG_UNUSED (orig))
 113 {
 114 }
 115
 116 void
 117 objc_declare_class (tree ARG_UNUSED (identifier))
 118 {
 119 }
 120
 121 void
 122 objc_declare_protocol (tree ARG_UNUSED (name), tree ARG_UNUSED (attributes))
 123 {
 124 }
 125
 126 void
 127 objc_start_protocol (tree ARG_UNUSED (proto),
 128                      tree ARG_UNUSED (protorefs),
 129                      tree ARG_UNUSED (attribs))
 130 {
 131 }
 132
 133 void
 134 objc_set_method_opt (bool ARG_UNUSED (optional))
 135 {
 136 }
 137
 138 void
 139 objc_start_class_interface (tree ARG_UNUSED (name),
 140                             tree ARG_UNUSED (super),
 141                             tree ARG_UNUSED (protos),
 142                             tree ARG_UNUSED (attribs))
 143 {
 144 }
 145
 146 void
 147 objc_start_category_interface (tree ARG_UNUSED (name),
 148                                tree ARG_UNUSED (categ),
 149                                tree ARG_UNUSED (protos),
 150                                tree ARG_UNUSED (attribs))
 151 {
 152 }
 153
 154 void
 155 objc_continue_interface (void)
 156 {
 157 }
 158
 159 void
 160 objc_finish_interface (void)
 161 {
 162 }
 163
 164 void
 165 objc_add_instance_variable (tree ARG_UNUSED (decl))
 166 {
 167 }
 168
 169 void
 170 objc_set_visibility (objc_ivar_visibility_kind ARG_UNUSED (vis))
 171 {
 172 }
 173
 174 void
 175 objc_start_class_implementation (tree ARG_UNUSED (name),
 176                                  tree ARG_UNUSED (super))
 177 {
 178 }
 179
 180 void
 181 objc_start_category_implementation (tree ARG_UNUSED (name),
 182                                     tree ARG_UNUSED (categ))
 183 {
 184 }
 185
 186 void
 187 objc_continue_implementation (void)
 188 {
 189 }
 190
 191 void
 192 objc_clear_super_receiver (void)
 193 {
 194 }
 195
 196 void
 197 objc_finish_implementation (void)
 198 {
 199 }
 200
 201 void
 202 objc_add_method_declaration (bool ARG_UNUSED (is_class_method),
 203                              tree ARG_UNUSED (signature),
 204                              tree ARG_UNUSED (attributes))
 205 {
 206 }
 207
 208 bool
 209 objc_start_method_definition (bool ARG_UNUSED (is_class_method),
 210                               tree ARG_UNUSED (signature),
 211                               tree ARG_UNUSED (attributes),
 212                               tree ARG_UNUSED (expr))
 213 {
 214   return true;
 215 }
 216
 217 void
 218 objc_finish_method_definition (tree ARG_UNUSED (fndecl))
 219 {
 220 }
 221
 222 bool
 223 objc_method_decl (enum tree_code ARG_UNUSED(opcode))
 224 {
 225   return false;
 226 }
 227
 228 tree
 229 objc_build_keyword_decl (tree ARG_UNUSED (selector),
 230                          tree ARG_UNUSED (type),
 231                          tree ARG_UNUSED (identifier),
 232                          tree ARG_UNUSED (attributes))
 233 {
 234   return 0;
 235 }
 236
 237 tree
 238 objc_build_method_signature (bool ARG_UNUSED (is_class_method),
 239                              tree ARG_UNUSED (rettype),
 240                              tree ARG_UNUSED (selectors),
 241                              tree ARG_UNUSED (optparms),
 242                              bool ARG_UNUSED (ellipsis))
 243 {
 244   return 0;
 245 }
 246
 247 tree
 248 objc_build_encode_expr (tree ARG_UNUSED (expr))
 249 {
 250   return 0;
 251 }
 252
 253 tree
 254 objc_build_protocol_expr (tree ARG_UNUSED (expr))
 255 {
 256   return 0;
 257 }
 258
 259 tree
 260 objc_build_selector_expr (location_t ARG_UNUSED (loc), tree ARG_UNUSED (expr))
 261 {
 262   return 0;
 263 }
 264
 265 tree
 266 objc_build_message_expr (tree ARG_UNUSED (receiver), tree ARG_UNUSED (args))
 267 {
 268   return 0;
 269 }
 270
 271 tree
 272 objc_build_string_object (tree ARG_UNUSED (str))
 273 {
 274   return 0;
 275 }
 276
 277 tree
 278 objc_get_class_reference (tree ARG_UNUSED (name))
 279 {
 280   return 0;
 281 }
 282
 283 bool
 284 objc_detect_field_duplicates (bool ARG_UNUSED (check_superclasses_only))
 285 {
 286   return false;
 287 }
 288
 289 tree
 290 objc_get_protocol_qualified_type (tree ARG_UNUSED (name),
 291                                   tree ARG_UNUSED (protos))
 292 {
 293   return 0;
 294 }
 295
 296 int
 297 objc_static_init_needed_p (void)
 298 {
 299   return 0;
 300 }
 301
 302 tree
 303 objc_generate_static_init_call (tree ARG_UNUSED (ctors))
 304 {
 305   return 0;
 306 }
 307
 308 int
 309 objc_is_public (tree ARG_UNUSED (expr), tree ARG_UNUSED (identifier))
 310 {
 311   return 1;
 312 }
 313
 314 tree
 315 objc_get_class_ivars (tree ARG_UNUSED (name))
 316 {
 317   return 0;
 318 }
 319
 320 void
 321 objc_add_property_declaration (location_t ARG_UNUSED (location),
 322                                tree ARG_UNUSED (decl),
 323                                vec<property_attribute_info *>&
 324                                /*prop_attr_list*/)
 325 {
 326 }
 327
 328 bool
 329 objc_is_property_ref (tree ARG_UNUSED (node))
 330 {
 331   return 0;
 332 }
 333
 334 bool
 335 objc_non_constant_expr_p (tree)
 336 {
 337   return 0;
 338 }
 339
 340 tree
 341 objc_maybe_build_component_ref (tree ARG_UNUSED (datum), tree ARG_UNUSED (component))
 342 {
 343   return 0;
 344 }
 345
 346 tree
 347 objc_build_class_component_ref (tree ARG_UNUSED (datum), tree ARG_UNUSED (component))
 348 {
 349   return 0;
 350 }
 351
 352 tree
 353 objc_maybe_build_modify_expr (tree ARG_UNUSED (lhs), tree ARG_UNUSED (rhs))
 354 {
 355   return 0;
 356 }
 357
 358 tree
 359 objc_build_incr_expr_for_property_ref (location_t ARG_UNUSED (location),
 360                                        enum tree_code ARG_UNUSED (code),
 361                                        tree ARG_UNUSED (argument),
 362                                        tree ARG_UNUSED (increment))
 363 {
 364   return 0;
 365 }
 366
 367 void
 368 objc_add_synthesize_declaration (location_t ARG_UNUSED (start_locus),
 369                                  tree ARG_UNUSED (property_and_ivar_list))
 370 {
 371 }
 372
 373 void
 374 objc_add_dynamic_declaration (location_t ARG_UNUSED (start_locus),
 375                               tree ARG_UNUSED (property_list))
 376 {
 377 }
 378
 379 const char *
 380 objc_maybe_printable_name (tree ARG_UNUSED (decl),
 381                            int ARG_UNUSED (v))
 382 {
 383   return NULL;
 384 }
 385
 386 tree
 387 objc_build_throw_stmt (location_t ARG_UNUSED (loc), tree ARG_UNUSED (expr))
 388 {
 389   return 0;
 390 }
 391
 392 tree
 393 objc_build_synchronized (location_t ARG_UNUSED (start_locus),
 394                          tree ARG_UNUSED (mutex), tree ARG_UNUSED (body))
 395 {
 396   return 0;
 397 }
 398
 399 void
 400 objc_begin_try_stmt (location_t ARG_UNUSED (try_locus), tree ARG_UNUSED (body))
 401 {
 402 }
 403
 404 void
 405 objc_begin_catch_clause (tree ARG_UNUSED (decl))
 406 {
 407 }
 408
 409 void
 410 objc_finish_catch_clause (void)
 411 {
 412 }
 413
 414 void
 415 objc_build_finally_clause (location_t ARG_UNUSED (finally_locus),
 416                            tree ARG_UNUSED (body))
 417 {
 418 }
 419
 420 tree
 421 objc_finish_try_stmt (void)
 422 {
 423   return 0;
 424 }
 425
 426 tree
 427 objc_generate_write_barrier (tree ARG_UNUSED (lhs),
 428                              enum tree_code ARG_UNUSED (modifycode),
 429                              tree ARG_UNUSED (rhs))
 430 {
 431   return 0;
 432 }
 433
 434 void
 435 objc_finish_foreach_loop (location_t ARG_UNUSED (location), tree ARG_UNUSED (object_expression),
 436                           tree ARG_UNUSED (collection_expression), tree ARG_UNUSED (for_body),
 437                           tree ARG_UNUSED (break_label), tree ARG_UNUSED (continue_label))
 438 {
 439   return;
 440 }
 441
 442 void
 443 objc_write_global_declarations (void)
 444 {
 445 }
 446
 447 bool
 448 objc_string_ref_type_p (tree ARG_UNUSED (strp))
 449 {
 450    return false;
 451 }
 452
 453 void
 454 objc_check_format_arg (tree ARG_UNUSED (format_arg),
 455                        tree ARG_UNUSED (args_list))
 456 {
 457 }
 458
 459 void
 460 objc_finish_function (void)
 461 {
 462 }
 463
 464 void
 465 objc_maybe_warn_exceptions (location_t ARG_UNUSED (loc))
 466 {
 467 }
 468
 469 enum objc_property_attribute_kind objc_prop_attr_kind_for_rid (enum rid)
 470 {
 471   return OBJC_PROPERTY_ATTR_UNKNOWN;
 472 }